Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
van bac » van ban, van bao, van hac
lap cua » lai cua, tap cua, lam cua
xuc va » tuc va, luc va, xac va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. thi van bac ((xuc va) OR (duc va)) thanh lap cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. thi van bac ((xuc va) OR (duc va)) thanh lap cua viet".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. thi van bac ((xuc va) OR (duc va)) thanh lap cua viet*.